Search Results

Search found 11672 results on 467 pages for 'formal methods'.

Page 259/467 | < Previous Page | 255 256 257 258 259 260 261 262 263 264 265 266  | Next Page >

• Implementing automatic logout in silverlight and wcf due to user inactivity

  - by rubin-attack

  I have a WCF web-service and a Silverlight app displaying data from that service. In my service I'd like to implement automatic logout of the user, if no service methods were invoked during a period of time (for example 20 minutes). I'm thinking about smth like that: Dictionary<User,TimeSpan> Inactivity When a service method is invoked i reset the TimeSpan. But what will happen, if 20 minutes pass, and I call the Logout method (which clears all User caches), and suddenly the User returns from lunch)) and presses a button in his Silverlight app? Obviously he'll get an error. Is there any way to avoid this, or all my concept is wrong? Maybe there's a better way to logout the user automatically?

  Read the article

• how get value from smartgwt Custom FilterEditorType ?

  - by Ehsan Khodarahmi

  Hi I've developed a custom widget (a persian calendar consist of a base textbox & image widget on a gwt grid which look likes smartgwt calendar) & putted it in a CanvasItem because i want to add it as a filter editor for a listGrid : ListGridField regDateTimeField = new ListGridField("regDateTime", ????? ? ????", 120"); regDateTimeField.setFilterEditorType(new PersianCalendarItem()); now list grid displays it successfully, but when i click on filter button, nothing happend even when it value changes. I think i have to override some canvas item methods to return internal textbox value, but i don't know how should i do this ???

  Read the article

• Access to content of Lotus Notes database without Lotus Notes software installed

  - by Fortilan

  I am looking for a programatic way to access content in a Lotus Notes database (.nsf file) without having Lotus Notes software installed. Python would be preferred but I'm also willing to look at other languages e.g. C/C++ or other means e.g. SQL From what I have read, all of the methods e.g. Python COM access, pyodbc rely on having Lotus Notes server software installed. The problem I am trying to solve is to read the content and look for references (URL's back to a web site that is undergoing maintenance and the addresses in the web site will change) As a start, I want to get a list of references and hope to be able to replace them with the new references to the modified web site. Any ideas on how best to do this welcome :)

  Read the article

• How to use EMF to read XML file?

  - by zengr

  I have to use EMF in one of my class projects. I am trying to understand how to use EMF to do the following: Read XML, Get the values into objects. Use ORM to persist the values in objects to database. - Done Get data from database using ORM and generate XML. I need to do all of that using: EMF (no idea what so ever) and JPA (DONE). I have used JAXB and I know, this can be done using JAXB, but how is (EMF == JAXB)?! I have created many java classes using EMF, but there are so many of them! Where do I implement the read/write methods and how do I run the EMF project? Thanks

  Read the article

• Doxygen C++ comment string parser in python?

  - by Sebastian

  Does anybody know of a python module to parse a doxygen style C++ comment string? I mean a string like this (simple example): /** * A constructor. * A more elaborate description of the constructor. * @param param1 test1 * @param param2 test2 */ and I would like to extract the brief, the long description, the parameters, the return value etc. I'm currently doing this using string methods and regular expressions but my solution is not very robust. Alternatively does anybody know an easy to use parser lib that I can set up quickly? Thanks in advance

  Read the article

• moq SetupSet is obsolete. In place of what?

  - by jkohlhepp

  Let's say I want to use moq to create a callback on a setter to store the set property in my own field for later use. (Contrived example - but it gets to the point of the question.) I could do something like this: myMock.SetupSet(x => x.MyProperty).Callback(value => myLocalVariable = value); And that works just fine. However, SetupSet is obsolete according to Intellisense. But it doesn't say what should be used as an alternative. I know that moq provides SetupProperty which will autowire the property with a backing field. But that is not what I'm looking for. I want to capture the set value into my own variable. How should I do this using non-obsolete methods?

  Read the article

• Cleanup vs Dispose(bool) in MVVM-light

  - by Budda

  In the lastest version of MVVM-light (V3 SP1) both "Dispose()" and "Dipose(bool)" methods in ViewModel class are marked Do not use this method anymore, it will be removed in a future version. Use ICleanup.Cleanup() instead Does this mean that IDisposable interface must not be implemented in all ViewModel classes that are derived from GalaSoft.MvvmLight.ViewModelBase (and cleanup must be overrided)? If yes, using can't be used for view-model instances... Probably I didn't understand something... Please clarify... What are the benefits of such cleaning up? Thanks.

  Read the article

• Java generics: What is the compiler's issue here?

  - by Epaga

  I have the following methods: public <T> T fromJson( Reader jsonData, Class<T> clazz ) { return fromJson( jsonData, (Type)clazz ); } public <T> T fromJson( Reader jsonData, Type clazz ) { ... } The compiler is saying about the first method: type parameters of <T>T cannot be determined; no unique maximal instance exists for type variable T with upper bounds T,java.lang.Object return fromJson( jsonData, (Type)clazz ); ^ What is the problem?

  Read the article

• Removing Left Recursion in ANTLR

  - by prosseek

  As is explained in http://stackoverflow.com/questions/2652060/removing-left-recursion , there are two ways to remove the left recursion. Modify the original grammar to remove the left recursion using some procedure Write the grammar originally not to have the left recursion What people normally use for removing (not having) the left recursion with ANTLR? I've used flex/bison for parser, but I need to use ANTLR. The only thing I'm concerned about using ANTLR (or LL parser in genearal) is left recursion removal. In practical sense, how serious of removing left recursion in ANTLR? Is this a showstopper in using ANTLR? Or, nobody cares about it in ANTLR community? I like the idea of AST generation of ANTLR. In terms of getting AST quick and easy way, which method (out of the 2 removing left recursion methods) is preferable?

  Read the article

• How can I extend DynamicQuery.cs to implement a .Single method?

  - by Yoenhofen

  I need to write some dynamic queries for a project I'm working on. I'm finding out that a significant amount of time is being spent by my program on the Count and First methods, so I started to change to .Single, only to find out that there is no such method. The code below was my first attempt at creating one (mostly copied from the Where method), but it's not working. Help? public static object Single(this IQueryable source, string predicate, params object[] values) { if (source == null) throw new ArgumentNullException("source"); if (predicate == null) throw new ArgumentNullException("predicate"); LambdaExpression lambda = DynamicExpression.ParseLambda(source.ElementType, typeof(bool), predicate, values); return source.Provider.CreateQuery( Expression.Call( typeof(Queryable), "Single", new Type[] { source.ElementType }, source.Expression, Expression.Quote(lambda))); }

  Read the article

• Delphi 2010 - Decode Base64 encoded image from XML doc

  - by James

  I am trying to decode a base64 encoded EMF image from an XML document in my application and render it on screen, however, it never seems to appear. If I copy/paste the data from the XML document into Notepad++ and use the Base64 Decode option and save the file as a .emf it opens fine in mspaint. So I think the issue is how I am decoding it. I have tried the following decode methods described in these articles: How to encode / decode Base 64 string http://www.swissdelphicenter.ch/torry/showcode.php?id=1223 I have also tried the TIdDecoderMIME class to no avail. Does anyone know the most reliable way of decoding a base64 encoded string from XML?

  Read the article

• App.Config Ignored After Pre-Build Event

  - by Jake Hulse

  I have a solution with several projects and several developers, each with their own environment (of course). To manage connection strings between each environment, I have created several app.config files for each environment: app.config.dev, app.config.qa, etc. The pre-build event simply copies the app.config.$(ConfigurationName) to app.config. This pre-build event is done for each project in the solution, and the config string is included in each (including the test project). When I use the pre-build events to manage the app.config files, the connection string cannot be found. I can get the tests to run fine by 2 methods: 1. Do not use the pre-build events to manage the app.config file selection, and do it myself or 2. If I check out app.config and make it writable, then the pre-build events work just fine. We are using Visual Studio 2008. I'm down to my last grey hair here, any ideas? Thanks in advance!

  Read the article

• Why does select SCOPE_IDENTITY() return a decimal instead of an integer?

  - by Earlz

  So I have a table with an identity column as the primary key, so it is an integer. So, why does SCOPE_IDENTITY() always return a decimal value instead of an int to my C# application? This is really annoying since decimal values will not implicitly convert to integers in C#, which means I now have to rewrite a bunch of stuff and have a lot of helper methods because I use SQL Server and Postgres, which Postgres does return an integer for the equivalent function.. Why does SCOPE_IDENTITY() not just return a plain integer? Are there people out there that commonly use decimal/non-identity values for primary keys?

  Read the article

• [hibernate - jpa ] good practices and bad practices

  - by blow

  Hi all, i have some questions about interaction with hibernate. openSession or getCurrentSession (without jta, thread insted)? How mix session operations with swing gui? Is good have something like this in a javabean class? public void actionPerformed(ActionEvent event) { // session code } Can i add methods to my entities that contains hql queries or is a bad practice? For example: // This method is in an entity MyOtherEntity.java class public int getDuration(){ Session session=HibernateUtil.getSessionFactory().getCurrentSession(); session.beginTransaction(); int sum=(Integer)session.createQuery("select sum(e.duration) as duration from MyEntity as e where e.myOtherEntity.id=:id group by e.name"). .setLong("id", getId()); .uniqueResult(); return sum; } In alternative how can i do this in a better and elegant way? Thanks.

  Read the article

• Spring 3 Controller Exception handler implementation problems

  - by predhme

  I was hoping to implement a single "ExceptionController" to handle exceptions that are thrown in execution of my other controllers' methods. I hadn't specified any HandlerExceptionResolver in my application context so according to the API documentation the AnnotationMethodHandlerExceptionResolver should be started. Verified as such in the source. So I am curious to know why the following isn't working. @Controller public class ExceptionController { @ExceptionHandler(NullPointerException.class) public ModelAndView handleNullPointerException(NullPointerException ex) { // Do some stuff log.error(logging stuff) return myModelAndView; } } @Controller public class AnotherController { @RequestMapping(value="/nullpointerpath") public String throwNullPointer() { throw new NullPointerException(); } } I see in the debug logs that the three default exception handlers are asked for handling of the exception, but nothing is done and I see "DispatcherServlet - Could not complete request". Followed by the user being displayed the stacktrace and a 500 Internal error.

  Read the article

• Unit testing a database connection and general questions on database-dependent code and unit testing

  - by dotnetdev

  Hi, If I have a method which establishes a database connection, how could this method be tested? Returning a bool in the event of a successful connection is one way, but is that the best way? From a testability method, is it best to have the connection method as one method and the method to get data back a seperate method? Also, how would I test methods which get back data from a database? I may do an assert against expected data but the actual data can change and still be the right resultset. EDIT: For the last point, to check data, if it's supposed to be a list of cars, then I can check they are real car models. Or if they are a bunch of web servers, I can have a list of existant web servers on the system, return that from the code under test, and get the test result. If the results are different, the data is the issue but the query not? THnaks

  Read the article

• linq to sql -> join

  - by ile

  SQL query: SELECT ArticleCategories.Title AS Category, Articles.Title, Articles.[Content], Articles.Date FROM ArticleCategories INNER JOIN Articles ON ArticleCategories.CategoryID = Articles.CategoryID Object repository: public class ArticleRepository { private DB db = new DB(); // // Query Methods public IQueryable<Article> FindAllArticles() { var result = from category in db.ArticleCategories join article in db.Articles on category.CategoryID equals article.CategoryID select new { CategoryID = category.CategoryID, CategoryTitle = category.Title, ArticleID = article.ArticleID, ArticleTitle = article.Title, ArticleDate = article.Date, ArticleContent = article.Content }; return result; } .... } And finally, I get this error: Error 1 Cannot implicitly convert type 'System.Linq.IQueryable' to 'System.Linq.IQueryable'. An explicit conversion exists (are you missing a cast?) C:\Documents and Settings\ilija\My Documents\Visual Studio 2008\Projects\CMS\CMS\Models\ArticleRepository.cs 29 20 CMS Any idea what did I do wrong? Thanks, Ile

  Read the article

• JSF 1.1 and Ajax4jsf not working properly on Websphere 6.1

  - by Shamik

  I am working with JSF 1.1, Ajax4JSF. What I find is if I enable a4j:support for some of JSF's inputText items, it is not working as expected. I have something like this in the code <h:inputText value="#{bean.desc}"> <a4j:support event="onkeyup" reRender="id"/> </h:inputText> And what I find is, sometimes it does not work, for example, I type TEST on the input text box and what transfers is only the "T" to the backing bean. One more problem that I see is, when I submit the form, some of the values are not getting set in the backing bean. The setter methods are not called at all. I do not think this is working properly in my env, is it this combination of JSF1.1,Ajax4JSF and websphere6.1 is not supported or is there anyway I can troubleshoot this ?

  Read the article

• vs2010 Linq to SQL -- adding an entity from my DBML

  - by Matt

  I think I may be going crazy here... Anyways, I have a DBML with a table 'User' in it. Pretty simple stuff -- From within a class, I have the following: BusinessDataContext businessDataContext = new BusinessDataContext(); var user = new User(); user.FirstName = FirstName; user.LastName = LastName; user.MiddleInitial = MiddleInitial; user.DateCreated = DateTime.UtcNow; /* There's no businessDataContext.User.Add method -- There's a bunch of generic collection methods with the <> symbols (Aggregate, All, Any...) Am I just too tired and missing something basic or did something simple change with vs 2010? */ businessDataContext.SubmitChanges(); I think I really just need sleep. :-)

  Read the article

• C# System.Data.SQLite Designer Code

  - by Nathan

  I've been messing around with the SQLite Designer in Visual Studio 2008 and I have noticed that when I use the generated Insert/Update statements they run extremely slow. Example: I have a data table with four columns and 5700 rows it took ~5 mins to insert the data into the database table However, I wrote my own database connection and insert methods using parameters and a single transaction and the same 5700 rows were inserted in under 1 second. Why is the generated code so slow and what is benefit to even using it? Thanks. Nathan

  Read the article

• android maps: How to Long Click a Map?

  - by vamsibm

  Hi. How do I long click on a mapview so that a place marker appears at that point on the map? I tried a couple ways without success: 1) Using setOnLongClickListener on the MapvView which never detected the longclicks. 2) My other idea was to extend MapView to override dispatchTouchEvent .. Create a GestureDetector to respond to longpress callback. But I was stuck midway here as I could not get a handle to my subclassed Mapview. i.e. MyMapview mymapview; //MyMapView extends MapView mymapView = (MyMapView) findViewById(R.id.map); //results in a classcast exception 3) The only other way I know how to try this is: Detect a MotionEvent.ACTION_DOWN and post a delayed runnable to a handler and detect longpress if the two other events: acton_move or an action_up, have not happened. Can someone provide thoughts on any of these methods to detect long presses? Thanks in advance. Bd

  Read the article

• Delay rendering or force re-rendering in Flex

  - by Tereno

  Hi there, In my Flex application, using a custom control, I am making a JSON request to grab some data from the server. My rendering depends on this data such as knowing how many boxes to draw. How can I either force the rendering to wait until I've got the data before drawing to screen or have the boxes draw once we receive the data? I have an event listener for Event.COMPLETE for my JSON request and in there, I call methods that add to the control. I've tried invalidateDisplayList but that doesn't seem to do anything for me?

  Read the article

• Blackberry support for Forms Authentication - ASP.NET MVC app

  - by Derek Mitchell

  I'm writing an ASP.NET MVC application that uses Forms Authentication. The target clients are a variety of mobile web browsers. When I use the BlackBerry 8530 simulator my MVC app authenticates as expected. I can visit pages whose controller methods are decorated with the [Authorize] attribute - no problem - they display and therefore I assume my Forms Authentication is working correctly. Using a physical Windows Mobile device to browse my site, I have the same experience as the BB simulator, the forms authentication works as I would expect. BUT when I try to visit the site using a Blackberry 8900 physical device the Login page keeps on looping back when I click the Login page. The device is not retaining it's "authenticated" status. I added code to verify this and I can see that: Request.IsAuthenticated: False User.Identity.IsAuthenticated: False So my question is what next steps can I take to try and find out why the Blackberry 8900 is losing it's authentication status. Is this cookie related? Anyone have any ideas? Cheers Derek

  Read the article

• Objective C HTML escape/unescape

  - by Squeegy

  Wondering if there is an easy way to do a simple HTML escape/unescape in Objective C. What I want is something like this psuedo code: NSString *string = @"&lt;span&gt;Foo&lt;/span&gt;"; [string stringByUnescapingHTML]; Which returns <span>Foo</span> Hopefully unescaping all other HTML entities as well and even ASCII codes like Ӓ and the like. Is there any methods in Cocoa Touch/UIKit to do this?

  Read the article

• Collision Detection - Java - Rectangle

  - by Trizicus

  I would like to know if this is a good idea that conforms to best practices that does not lead to obscenely confusing code or major performance hit(s): Make my own Collision detection class that extends Rectangle class. Then when instantiating that object doing something such as Collision col = new Rectangle(); <- Should I do that or is that something that should be avoided? I am aware that I 'can' but should I? I want to extend Rectangle class because of the contains() and intersects() methods; should I be doing that or should I be doing something else for 2D collision detection in Java?

  Read the article

< Previous Page | 255 256 257 258 259 260 261 262 263 264 265 266  | Next Page >